Python代写代考

Trying out a linear model:¶ There have been a few great scripts on xgboost already so I’d figured I’d try something simpler: a regularized linear regression model. Surprisingly it does really well with very little feature engineering. The key point is to to log_transform the numeric variables since most of them are skewed. In [2]: import

ConvolutionalNetworks-checkpoint Convolutional Networks¶ So far we have worked with deep fully-connected networks, using them to explore different optimization strategies and network architectures. Fully-connected networks are a good testbed for experimentation because they are very computationally efficient, but in practice all state-of-the-art results use convolutional networks instead. First you will implement several layer types that are

Batch Normalization¶ One way to make deep networks easier to train is to use more sophisticated optimization procedures such as SGD+momentum, RMSProp, or Adam. Another strategy is to change the architecture of the network to make it easier to train. One idea along these lines is batch normalization which was recently proposed by [3]. The

Dropout¶ Dropout [1] is a technique for regularizing neural networks by randomly setting some features to zero during the forward pass. In this exercise you will implement a dropout layer and modify your fully-connected network to optionally use dropout. [1] Geoffrey E. Hinton et al, “Improving neural networks by preventing co-adaptation of feature detectors”, arXiv

$\newcommand{\vct}[1]{\boldsymbol{#1}} \newcommand{\mtx}[1]{\mathbf{#1}} \newcommand{\tr}{^\mathrm{T}} \newcommand{\reals}{\mathbb{R}} \newcommand{\lpa}{\left(} \newcommand{\rpa}{\right)} \newcommand{\lsb}{\left[} \newcommand{\rsb}{\right]} \newcommand{\lbr}{\left\lbrace} \newcommand{\rbr}{\right\rbrace} \newcommand{\fset}[1]{\lbr #1 \rbr} \newcommand{\pd}[2]{\frac{\partial #1}{\partial #2}}$ Single layer models¶ In this lab we will implement a single-layer network model consisting of solely of an affine transformation of the inputs. The relevant material for this was covered in the slides of the first lecture. We will